So basically in the recent ocr biology b123 paper for this years GCSE students, a graph question came up where it plotted the amount of antigens and antibodies in the persons blood after getting an infection. It asked for the minimum amount of antibodies needed before the amount of antigens made is less than the amount killed (so where it falls)
What did you ppl get??? how did you get it??? is it 2.8 or 3?